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Method for solidifying cloth band winding phenoic composite material product

A curing method and composite material technology, which is applied in the curing field of tape-wound phenolic composite material products, can solve the problems of long curing process time, large equipment investment, high production cost, etc., and achieve saving raw material consumption, reducing feeding amount, and low cost Effect

Active Publication Date: 2009-06-10
XIAN AEROSPACE COMPOSITE MATERIALS INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a short process cycle, low cost and other disadvantages of the existing hydraulic kettle and air pressure kettle for the shortcomings of long curing process time, large equipment investment and high production cost, as well as the shortcomings of cured product wrinkling and low hoop strength. The curing method of cloth tape wrapping phenolic composite products with high hoop tensile strength, low cost, and the produced phenolic composite products are wrinkle-free

Method used

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  • Method for solidifying cloth band winding phenoic composite material product
  • Method for solidifying cloth band winding phenoic composite material product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, for the carbon / boron phenolic composite material combustion chamber blank 1 produced by cloth tape winding, the following curing method can be used: the combustion chamber blank 1 is placed on the lightweight mandrel 2, and then installed on the numerical control winding machine, the winding package Cover with perforated film, and then wrap a layer with glass fiber / epoxy E51 resin prepreg tape as pressure layer 3; then place it in an oven in a curing furnace and heat it up to 80°C for 3 hours; then continue to heat up to 175°C Solidify for 5 hours; take out the furnace after cooling down to remove the pressurized layer, and obtain a carbon / phenolic combustion chamber with a density of 1.42g / cm 3 .

Embodiment 2

[0024] Such as figure 2 As shown, the following curing method can be used for the blank 1 of the tape-wound high silicon oxide / barium phenolic back wall insulation layer of the C / C expansion section 4: put the blank 1 on the lightweight mandrel 2, and then install it on the CNC winding machine , wound and coated with a perforated film, and then wrapped with a glass fiber / epoxy E51 resin prepreg tape as a pressure layer 3; then placed in an oven in a curing furnace to heat up to 80 ° C for 3 hours; then continue to heat up Cured at 155°C for 4 hours; after cooling down, it was removed from the furnace to remove the pressurized layer to obtain a high-silica / barium phenolic back wall insulation layer with a density of 1.67g / cm 3 .

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Abstract

The present invention discloses a fast solidification method of parts made of phenolic aldehyde composite materials; the performed parts made of phenolic aldehyde composite materials by glass fiber / epoxy preimpregnated galloon is wound and the performed parts is solidified by an oven; and at last the compact products made of phenolic aldehyde composite materials are obtained. The present invention overcomes the defect that the solidification time of hydraulic kettle and air pressure kettle used at present is long; the equipment investment is large and the product cost is high; the present invention boasts of short process cycle and low cost; at the same time, the present invention solves the problem that the surface of the solidified product is crinkly after being solidified by the hydraulic kettle and air pressure kettle; the circumferential extension strength is promoted and net-shape product can be produced; the roughcast batch can be reduced and vacuum bags do not need to be manufactured; in this way, the present invention saves raw materials; the manufacturing of pressure layer adopts a fiber numerically controlled winder for winding which can meet the requirements of pressure layer molding of thin walls of different complicated shapes and parts made of different phenolic resin-based composite materials.

Description

technical field [0001] The invention relates to a curing method for a composite material product, in particular to a curing method for a tape-wound phenolic composite material product. Background technique [0002] Phenolic composite materials (such as carbon / phenolic and high silica / phenolic) are widely used as a light-weight and ablation-resistant material in rocket engine nozzle expansion sections, connecting rings, nozzle back wall insulation layers and other components. Since the curing of phenolic resin is a polycondensation reaction, accompanied by the release of small molecules such as water, in order to obtain a dense product, pressure must be applied during the curing process. In recent years, a lot of work has been done in the development of addition reaction phenolic resin technology in China. The developed new phenolic resin has no small molecules in curing, and can be cured like epoxy resin to obtain dense parts without pressure. However, at present, the domes...

Claims

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Application Information

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IPC IPC(8): B29C35/02B29K61/04
Inventor 闫联生崔红姚冬梅苏红宋麦丽杨星
Owner XIAN AEROSPACE COMPOSITE MATERIALS INST
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